Repertories have helped conscientious homeopaths in their search for the correct remedy as long as homeopathy has existed. Samuel Hahnemann, the founder of Homeopathy, took the first steps in structuring information into some kind of repertory.
However, it was his immediate disciple and collaborator, Clemens von Boenninghausen, who is credited with creating the first usable repertory in 1832. Different authors expanded on versions of this repertory, e.g. Allen, Jahr, von Lippe, etc. Some created completely new structures, as did Gentry and Knerr.
It was Kent, however, who published a repertory with a structure and a hierarchical logic that would stand the test of time.
As good as Kent's Repertory is, it is not complete or perfect. This is the nature of any repertory. The repertory must evolve through clinical experience, provings, diligent practice, with cautious improvements and additions.
For decades, no repertory succeeded in taking up this challenge of careful progress. In 1987, however, the Synthesis project began. Under the supervision of Dr. Frederik Schroyens, this collaboration of homeopaths from around the world has succeeded in significantly expanding and improving upon Kent's great Repertory, without a compromise in quality.
Combined with the powerful homeopathic software program known as RADAR, it has equipped today's practitioners with the powerful database tools necessary for finding the correct remedy for their patients.
Synthesis is not only the latest in a long line of Repertories; it consolidates one of the most ingenious homeopathic projects of this century.
Each new version has included the fruit of thousands of hours of work by many dedicated people. Our repertory is enlarged with additions, but they only increased 15-30% at each step. We believe it is this policy that is the key to the exceptional quality of our Repertory.
Every version of Synthesis is used millions of times by leading homeopaths before it is used to build another edition. As can be expected from these critical minds, they have checked the rubrics and the remedies repeatedly. Their comments are integrated into each new edition.
The Synthesis project was started because we felt that the time had come to improve, on a qualitative level, the language and structure Kent used, but within the hierarchical framework that most homeopaths are familiar with. We believe that this approach will prove the best way to counteract the mentality where progress in homeopathy is measured by quantity, be it additions or megabytes available.
Synthesis is a sound repertorial database from which to make additions. The objective was to do it without compromising the accuracy of the information and the efficacy of the results.